Method and device for transmitting or receiving uplink control channel in wireless communication system

Abstract

A method for transmitting an uplink signal by a terminal in a wireless communication system according to the present invention comprises the steps of: receiving a downlink signal from a base station; receiving downlink control information (DCI) for requesting transmission of an uplink signal corresponding to the downlink signal, from the base station; and transmitting, to the base station, a response to the downlink signal on the basis of a message, wherein the DCI includes at least one among an ACK window field, a DAI field, and an ACK request field for requesting the response to the downlink signal.

The invention claimed is: 
     
       1. A method performed by a terminal in a wireless communication system, the method comprising:
 receiving, from a base station on a physical downlink control channel (PDCCH), downlink control information (DCI) scheduling downlink data, wherein the DCI includes first information on a physical uplink control channel (PUCCH) resource of an unlicensed band associated with an uplink transmission for the downlink data, second information on at least one additional PUCCH resource of the unlicensed band for the downlink data in addition to the PUCCH resource, and information on a time offset between the PUCCH resource and the at least one additional PUCCH resource; 
 receiving, from the base station, the downlink data based on the DCI; 
 identifying an available PUCCH resource among the PUCCH resource and the at least one additional PUCCH resource based on the time offset; and 
 transmitting, to the base station, a response for the downlink data based on the identified available PUCCH resource on the unlicensed band. 
 
     
     
       2. The method of  claim 1 , wherein the DCI further includes at least one of an acknowledgement (ACK) request field, a downlink assignment index (DAI) field, or an ACK window field, for the response, and
 wherein the response includes information on a result of reception for one or more hybrid automatic repeat request (HARQ) processes identified by the DCI. 
 
     
     
       3. The method of  claim 1 , wherein the response is transmitted based on a result of a channel access procedure for the unlicensed band. 
     
     
       4. The method of  claim 1 , wherein a number of the at least one additional PUCCH resource is identified based on the DCI, a higher layer signaling, system information, or a group common PDCCH, and
 wherein the DCI configures a starting symbol, an ending symbol, and a transmission interval length for each of the PUCCH resource and the at least one additional PUCCH resource. 
 
     
     
       5. A terminal in a wireless communication system, the terminal comprising:
 a transceiver configured to transmit or receive a signal; and 
 a controller coupled with the transceiver and configured to:
 receive, from a base station on a physical downlink control channel (PDCCH), downlink control information (DCI) scheduling downlink data, wherein the DCI includes first information on a physical uplink control channel (PUCCH) resource of an unlicensed band associated with an uplink transmission for the downlink data, second information on at least one additional PUCCH resource of the unlicensed band for the downlink data in addition to the PUCCH resource, and information on a time offset between the PUCCH resource and the at least one additional PUCCH resource, 
 receive, from the base station, the downlink data based on the DCI, 
 identify an available PUCCH resource among the PUCCH resource and the at least one additional PUCCH resource based on the time offset, and 
 transmit, to the base station, a response for the downlink data based on the identified available PUCCH resource on the unlicensed band. 
 
 
     
     
       6. The terminal of  claim 5 , wherein the DCI further includes at least one of an acknowledgement (ACK) request field, a downlink assignment index (DAI) field, or an ACK window field, for the response,
 wherein the response includes information on a result of reception for one or more hybrid automatic repeat request (HARQ) processes identified by the DCI. 
 
     
     
       7. The terminal of  claim 5 , wherein the response is transmitted based on a result of a channel access procedure for the unlicensed band. 
     
     
       8. The terminal of  claim 5 , wherein a number of the at least one additional PUCCH resource is identified based on the DCI, a higher layer signaling, system information, or a group common PDCCH, and
 wherein the DCI configures a starting symbol, an ending symbol, and a transmission interval length for each of the PUCCH resource and the at least one additional PUCCH resource. 
 
     
     
       9. A method performed by a base station in a wireless communication system, the method comprising:
 transmitting, to a terminal on a physical downlink control channel (PDCCH), downlink control information (DCI) scheduling a downlink data, wherein the DCI includes first information on a physical uplink control channel (PUCCH) resource of an unlicensed band associated with an uplink transmission for the downlink data, second information on at least one additional PUCCH resource of the unlicensed band for the downlink data in addition to the PUCCH resource, and information on a time offset between the PUCCH resource and the at least one additional PUCCH resource; 
 transmitting, to the terminal, the downlink data based on the DCI; and 
 receiving, from the terminal, a response for the downlink data based on an available PUCCH resource on the unlicensed band, 
 wherein the available PUCCH resource is identified among the PUCCH resource and the at least one additional PUCCH resource based on the time offset. 
 
     
     
       10. The method of  claim 9 , wherein the DCI further includes at least one of an acknowledgement (ACK) request field, a downlink assignment index (DAI) field, or an ACK window field, for the response,
 wherein the response includes information on a result of reception for one or more hybrid automatic repeat request (HARQ) processes identified by the DCI, and 
 wherein the response is received based on a channel access procedure for the unlicensed band. 
 
     
     
       11. The method of  claim 9 , wherein a number of the at least one additional PUCCH resource is identified based on the DCI, a higher layer signaling, system information, or a group common PDCCH, and
 wherein the DCI configures a starting symbol, an ending symbol, and a transmission interval length for each of the PUCCH resource and the at least one additional PUCCH resource. 
 
     
     
       12. A base station in a wireless communication system, the base station comprising:
 a transceiver configured to transmit or receive a signal; and 
 a controller coupled with the transceiver and configured to:
 transmit, to a terminal on a physical downlink control channel (PDCCH), downlink control information (DCI) scheduling a downlink data, wherein the DCI includes first information on a physical uplink control channel (PUCCH) resource of an unlicensed band associated with an uplink transmission for the downlink data, second information on at least one additional PUCCH resource of the unlicensed band for the downlink data in addition to the PUCCH resource, and information on a time offset between the PUCCH resource and the at least one additional PUCCH resource, 
 transmit, to the terminal, the downlink data based on the DCI, and 
 receive, from the terminal, a response for the downlink data based on an available PUCCH resource on the unlicensed band, 
 
 wherein the available PUCCH resource is identified among the PUCCH resource and the at least one additional PUCCH resource based on the time offset. 
 
     
     
       13. The base station of  claim 12 , wherein the DCI further includes at least one of an acknowledgement (ACK) request field, a downlink assignment index (DAI) field, or an ACK window field for the response, and
 wherein the response includes information on a result of reception for one or more hybrid automatic repeat request (HARQ) processes identified by the DCI. 
 
     
     
       14. The base station of  claim 12 , wherein the response is received based on a channel access procedure for the unlicensed band. 
     
     
       15. The base station of  claim 12 , wherein a number of the at least one additional PUCCH resource is identified based on the DCI, a higher layer signaling, system information, or a group common PDCCH, and
 wherein the DCI configures a starting symbol, an ending symbol, and a transmission interval length for each of the PUCCH resource and the at least one additional PUCCH resource.